Microfluidics application for monitoring hydrate phase transition in flow throats and evaluation of its saturation measurement

•Apply microfluidics technology on hydrate-based research under high pressure.•Maintain the same throat shapes for microscopic study with different parameters.•Observe the processes of hydrate phase transitions directly at magnification.•Propose a convenient and persuasive method for hydrate saturation calculation.•Analyze the error sources and applicability of 3 hydrate saturation test methods.